His Excellency the President of the Hellenic Republic Prokopis Pavlopoulos, the Minister of National Defence Panos Kammenos, the Alternate Minister of Defence Dimitris Vitsas, HNDGS Chief Admiral Evangelos Apostolakis, HAGS Chief Lt General Vassileios Tellides, HNGS Lt Admiral Georgios Giakoumakis and HAFGS Lt General Christos Vaitsis attended the celebrations for St. Nicholas Patron Saint of the Hellenic Navy and Merchant Marine, held at the Hellenic Naval Academy at Piraeus.